tonight, we hear from academy award-winning documentary filmmaker laura poitras. her latest film "risk," which looks at wikileaks and julian assange, premieres this saturday >> it's a bit surprising that i do documentaries because i consider myself to be a really shy person. there's something about the documentary form that i guess it sort of-- it kind of gives you an invitation maybe to go places you wouldn't go, otherwise to take risks you wouldn't take otherwise. my filmmaking is kind of comes in a tradition of observational cinema or cinema vÉrite, where legendary founders of it, d. a. pennebaker, albert maysles, frederick wiseman, they capture human stories, they capture drama, and they capture history as it unfolds, when you talk to people and who they tell you who they are is oftentimes different than act- than their actions, so i'm interested in people's actions and choices, so, for instance, sitting in a hotel room with edward snowden as he's making this monumental decision to leak this information, is an example of the type of cinema like, that i'm inter